# can u please explain how the underlined differentiated part came: Question 24: If x=a sin 2t (1 + cos 2t) and y = b cos 2t (1-cos 2t), show that at $t=\frac{\mathrm{\pi }}{4},\frac{dy}{dx},\frac{b}{a}t=\frac{\mathrm{\pi }}{4},\frac{dy}{dx}=\frac{b}{a}$

Dear student,

There is mistake in the solution

Regards

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